Perhaps you should try some spelling variations:
special expression » spatial expression, species expression, specific expression
information a » information age
array sharing » array string, arrays bearing, way sharing
array imaging » arrays imaging, airway imaging, ray imaging
array fermi » array forming, array format

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information a special expression ((((array sharing) or (array imaging))) or (array fermi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information a special expression ((((array sharing) OR (array imaging))) OR (array fermi)).
• Adding a wildcard symbol may retrieve word variants: information a special expression ((((array sharing) or (array imaging))) or (array fermi))*.